UK based so soon to be not Europe, but I'm used to 1 month. I've also seen +1 month for every 5 years of service, so 9 years = 3 months, 11 = 4 etc. 3 for fro

UK based so soon to be not Europe, but I'm used to 1 month. I've also seen +1 month for every 5 years of service, so 9 years = 3 months, 11 = 4 etc. 3 for front-line staff seems excessive